Edwards Signaling EBPS Remote Booster Power Supply - Manual (Page 24)

18 Remote Booster Power Supply Technical Reference Manual
Continuous mode
In continuous mode, NACs are activated following the sense circuits in
continuous mode. They activate one or four seconds after the sense input
activates and restore seven seconds after the sense input restores.
Note:
Activating the NACs four seconds after the sense input restores does not
comply with UL 864 9th edition.
Temporal mode
In temporal mode, NACs are activated following the sense circuits in temporal
mode. They activate one or four seconds after the sense input activates and
restore seven seconds after the sense input restores. NACs generate temporal
output as defined by NFPA.
Note: Activating the NACs four seconds following sense circuits in temporal
mode does not comply with UL 864 9th edition.
Auxiliary
In auxiliary mode, NACs turn on during power-up. Sync pulses are not
generated. Aux circuits can be configured to stay active during a power fail or
load shed on a power fail (after a 20 second delay). Aux circuits are load shed
when the system reaches low battery to prevent deep discharge of the batteries.